My Father is the:

Sometimes Christian novels can be a bit too other worldly, a bit too trite and often a bit dubious theologically. Here is an amazing book that tells of God transforming one man and changing a community, all cunningly bounded in an exposition of John 15 (which I'd always found hard going in getting beyond the obvious). It may only be a novel, but it challenges as much as any biography and teaches as much as any hardcore theology books. (See also "When the Spirit comes" by the same author)